Lighting emitting element and method for manufacturing the same

Abstract

In order to provide a light emitting device and an electronic equipment which suppress luminance deterioration, and have long life, the invention does not form an organic compound layer which is composed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and so on, and electrodes in vacuum-through, as in a conventional vacuum deposition method, but after a hole injection layer, which comprises phthalocyanine, is formed, it is exposed to gas atmosphere. In particular, copper phthalocyanine is exposed to oxygen atmosphere. By this method, provided is an organic light emitting element which has long life, and by using the above-described organic light emitting element, a light emitting device and an electronic equipment are fabricated.

1. A manufacturing method of a passive matrix type light emitting device comprising:
 forming first electrodes in a stripe shape and over a first substrate; 
 forming an organic hole injection layer over the first electrodes; 
 exposing the organic hole injection layer to oxygen gas; 
 forming a light emitting layer over the organic hole injection layer; 
 forming second electrodes in a stripe shape and over the light emitting layer, wherein the second electrodes are disposed substantially orthogonally with the first electrodes; and 
 fixing a second substrate to the first substrate with at least the organic hole injection layer and the light emitting layer interposed therebetween. 
 
     
     
       2. A method according to  claim 1 , wherein the first electrode is a transparent electrode. 
     
     
       3. A method according to  claim 1 , wherein the organic hole injection layer is formed with phthalocyanine. 
     
     
       4. A manufacturing method of a passive matrix type light emitting device comprising:
 forming first electrodes in a stripe shape and over a substrate; 
 forming an organic hole injection layer over the first electrode; 
 doping an electron acceptable compound to the organic hole injection layer; 
 exposing the organic hole injection layer to oxygen gas; 
 forming a light emitting layer over the organic hole injection layer; 
 forming second electrodes over the light emitting layer; wherein the second electrodes are disposed substantially orthogonally with the first electrodes; and 
 fixing a second substrate to the first substrate with at least the organic hole injection layer and the light emitting layer interposed therebetween. 
 
     
     
       5. A method according to  claim 4 , wherein the first electrode is a transparent electrode. 
     
     
       6. A method according to  claim 4 , wherein the organic hole injection layer is formed with phthalocyanine. 
     
     
       7. A manufacturing method of a light emitting device comprising:
 forming first electrodes over a first substrate; 
 forming an organic hole injection layer over the first electrodes; 
 exposing the organic hole injection layer to oxygen gas; 
 forming a light emitting layer over the organic hole injection layer; 
 forming second electrodes over the light emitting layer; and 
 fixing a second substrate to the first substrate with at least the organic hole injection layer and the light emitting layer interposed therebetween. 
 
     
     
       8. A method according to  claim 7 , wherein the first electrode is a transparent electrode. 
     
     
       9. A method according to  claim 7 , wherein the organic hole injection layer is formed with phthalocyanine. 
     
     
       10. A manufacturing method of a light emitting device comprising:
 forming first electrodes over a substrate; 
 forming an organic hole injection layer over the first electrode; 
 doping an electron acceptable compound to the organic hole injection layer; 
 exposing the organic hole injection layer to oxygen gas; 
 forming a light emitting layer over the organic hole injection layer; 
 forming second electrodes over the light emitting layer; and 
 fixing a second substrate to the first substrate with at least the organic hole injection layer and the light emitting layer interposed therebetween. 
 
     
     
       11. A method according to  claim 10 , wherein the first electrode is a transparent electrode. 
     
     
       12. A method according to  claim 10 , wherein the organic hole injection layer is formed with phthalocyanine.